Biology

Hi,
Yes, of course, there are lot many fields other than medicine and engineering. If you are good at math and want to be a scholar, you can pursue Bachelor in maths Honors and also, you can pursue Bachelor in biology Honors too depending on your choice and if you think, no, I won't to pursue both of them by doing B.Sc as well. This option is if you want to go in teaching profession!
Also, it also depends what you want to be in your life in long haul because being good at maths and biology at 10th level is totally different from being pursuing something on an extreme level because 10 and 11, 12 have difference.
And as far as PCB and PCM are concerned, you should decide what you want to pursue then only opt for something. Like if you want to do something in zoology and botany then you can go for PCB, if you want to be a scholar in mathematics then you can go for PCM.
So, basically, it's your call depending on the career you want to opt for.
Good luck :)

Those students who have knack in Biology and are planning to choose the career in the Medical fields can go for courses like:
MBBS or Bachelor of Medicine and Bachelor of Surgery
BAMS or Bachelor of Ayurveda medicine and surgery
BDS (Bachelor of Dental surgery)
Optometrists
Dental Surgeon, Pharmacists, Physician, Nursing and others
BHMS Eligibility Criteria
Candidates are required to fulfill the below mentioned minimum eligibility criteria required for admission into the course.
10+2 or any equivalent degree from a recognised university.
An aggregate score 50% at 10+2 level
Physics, Chemistry, Biology and English as the compulsory subjects.
Minimum age limit is 17 years

Eligibility for B.Sc. in Agriculture
Interested aspirants for the course are required to fulfil the below-mentioned eligibility criteria.Completion of Intermediate (12 years of school education) in Science streamPhysics, Chemistry, Biology and/or Mathematics as the subjects of study
Apart from this, candidates possessing Intermediate in Agriculture stream (limited states) are also eligible to apply. Depending on the university, the eligibility varies in terms of a combination of subjects. Eligibility criteria also varies for reserved categories as per the reservation guidelines of GOI.
B.Sc. in Agriculture: Admission Process
Admission in universities or institutes offering B.Sc. in Agriculture course is done basically in two modes. It is done either based on the marks obtained in the qualifying examination (Direct Admission) or written exam conducted by the university/institution that offers the degree.
The details on how to apply for B.Sc. degree in Agriculture can be collected from the authorized website of the institution along with the information on course details and available number of seats. The application forms can be obtained either through the college office or from the concerned web portal.
Some entrance exams conducted for admission to B.Sc. Agriculture course are as follows:
ICAR Entrance Exam (ICAR-AIEEA)- It is an agriculture entrance exam conducted by Indian Council of Agricultural Research (ICAR) for admission to 15% seats in Agriculture Universities in Bachelor Degree programs and 100% seats in ICAR Deemed to be Universities and NDRI, Karnal
EAMCET- Conducted for admissions in Agriculture colleges and universities in Andhra Pradesh
PAU Entrance Exam- Conducted by Punjab Agricultural University
KEAM- Conducted for agricultural colleges in Kerala
IGKV CET- Conducted by Indira Gandhi Krishi Vishwavidyalaya
Some colleges offer B.Sc. Agriculture admission simply on the basis of marks obtained in qualifying exam.